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I followed this source (FFmpeg: Batch convert all audio (mp3) in folder to video (mp4) with album artwork) and it works, but it down scales my album cover from 1425 x 1406 dimension to 400 x 396.

My Batch code is

echo off
for %%a in ("*.mp3") do (
  ffmpeg -i "%%a" -an -vcodec copy "C:\mp4\%%~na.jpg"
  "C:\ffmpeg\bin\ffmpeg" -loop 1 -i  "C:\mp4\%%~na.jpg" -i "%%a" -c:v libx264 -vf pad="width=ceil(iw/2)*2:height=ceil(ih/2)*2" -preset veryslow -tune stillimage -crf 18 -pix_fmt yuv420p -c:a aac -shortest -strict experimental -b:a 192k -shortest "C:\mp4\%%~na.mp4" )
pause

Problem is I don't know how to fix "down scaling" thing, and I am sorry for stupid questions but I need to know it. I watched other errors or tried to understand codes from others but I am not doing it well.

vijay v
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unknownman
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  • Share full log for one execution. – Gyan Feb 09 '21 at 14:46
  • @Gyan First picture: https://prnt.sc/yv03gn Second Picture: https://prnt.sc/yv0gmn Third Picture: https://prnt.sc/yv0i2s That is for one Mp3 file but it is doing for all of them – unknownman Feb 09 '21 at 16:08
  • I see no rescaling. The covers in the MP3s are `400x395`. – Gyan Feb 09 '21 at 17:35
  • Yeah it works. Was not thinking you should change album cover from 400 x 395 dimensions to 1425 x 1406. I thought it would automatically convert input image + mp3 = mp4. Thanks @Gyan :D – unknownman Feb 09 '21 at 19:21

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